Method for manufacturing glass bottles

Abstract

A method for manufacturing glass bottles is disclosed which includes consecutively delivering gobs of molten glass into a blank mold, forming each gob into a parison, transferring the parisons alternately into at least two sets of blow molds, allowing said parisons to reheat, and expanding the parisons in the blow molds. The sets of blow molds reciprocate along a substantially vertical path. A first position where the parisons are alternately received by the blow molds and blown containers removed is located on the vertical path. The parisons are expanded and cooled in the blow molds by blowing them out or by applying a vacuum, or a combination of those means at a second position on the vertical path.

What I claim is: 
     
       1. A method of manufacturing glass containers including the steps of reciprocating first and second blow molds along a substantially vertical path into and out of a receiving position, transferring a first parison into said first blow mold located at said receiving position, moving said first blow mold out of said receiving position and allowing said first parison to reheat, expanding said first parison into a first container, moving said second blow mold into said receiving position, transferring a second parison into said second blow mold, moving said second blow mold out of said receiving position and allowing said second parison to reheat, expanding said second parison into a second container, moving said first blow mold back into said receiving position and removing said first container, transferring a next parison into said first blow mold, moving said first blow mold out of said receiving position, moving said second blow mold back into said receiving position and removing said second container, transferring a next parison to said second blow mold, and repeating the cycle. 
     
     
       2. A method of manufacturing glass containers, as defined in claim 1, wherein each parison is expanded into a container while the blow mold enclosing such parison is out of said receiving position. 
     
     
       3. A method of manufacturing glass containers, as defined in claim 1, wherein said parisons are expanded by applying vacuum within the cavities of said first and second blow molds and external to said parisons. 
     
     
       4. A method of manufacturing glass containers, as set forth in claim 1, wherein said second blow mold is moved to said receiving position and a second parison is transferred into said second blow mold while the first parison is allowed to reheat and is expanded in said first blow mold out of said receiving position, and wherein said first blow mold is moved to said receiving position and a first parison is transferred into said first blow mold while said second parison is allowed to reheat and is expanded in said second blow mold out of said receiving position. 
     
     
       5. A method of manufacturing glass containers including the steps of: reciprocating a plurality of blow molds along a substantially vertical path into and out of a receiving position;   transferring parisons into the plurality of blow molds during the time each blow mold is at the receiving position;   allowing the parisons to reheat in the blow molds;   expanding the parisons in the blow molds into containers; and,   removing the containers from the blow molds at the receiving position and transferring new parisons into the blow molds; and repeating the cycle.   
     
     
       6. A method of manufacturing glass containers including the steps of: alternately reciprocating two blow molds along a substantially vertical path into and out of a receiving position, one of said blow molds moving upwardly when reciprocated out of said receiving position and the other of said blow molds moving downwardly when reciprocated out of said receiving position;   removing a blown container and transferring a new parison into each blow mold after it is reciprocated to said receiving position; and   for each blow mold reciprocated out of said receiving position, allowing the parison in such blow mold to reheat and subsequently expanding such reheated parison prior to reciprocating such blow mold back to said receiving position.   
     
     
       7. A method of manufacturing glass containers, as defined in claim 6, wherein a blown container is removed from and a new parison is transferred to a blow mold in said receiving position at the same time a parison is allowed to reheat and is expanded in a blow mold out of said receiving position.